Bed-spring.



F. KARR.

BED SPRING.

APPLICATION FILED 020.1.1911- RENEWED MAR. 22. I916.

L fi ml Patented Nov. 21, 1916.

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"manner as to form a supporting FRANCIS KARE, or HoLLAm), MICHIGAN.

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Specification of Letters Patent.

PatentedNov. 21, 1916.

Application filed December 1, 1911, Serial No. 663,465. Renewed March 22, 1916. Serial No. 85,988,

Holland, in the county of Ottawa and State of Michigan, have invented certain new and useful Improvements in Bed-Springs, .of which the following is a specification.

My invention relates to improvements in conical spiral spring bed mattresses, and

its objects ar'ez First, to provide an absoond, to provide an absolutely flexible and pivotal connection between the surface coils of the springs and at the same time extend material from which said connection. is madev across the surface coils to form an auxiliary support for the ticking of the bed that is supported by the springs; and, third, to unite the connecting devices with the ter-' minal ends of the spiral springs so firmly that no overlapping of the adjacent terminal coils will be possible, yet. without im pairment of the perfect flexibility of the connecting elements between said coils. I attain these objects bythe mechanism ,illus-, trated in the accompanying drawing, in

Figure 1 is a top plan of a set of .-six

springs to show one manner of interweaving the surface tie rods and inserting the pivotal springs. Fig. 2 shows a modified form for upper surface construction.

Similar letters refer to similar "partsthroughout the several views.

- In Fig. 1 I have shown the surface coils of the springs A as having slight lateral indentures or reverse curves at a a, which are designed as looking points where the pivotal springs B and the extended wire ends thereof, may be wound around, or tied to the surface coils in such a manner as to avert all danger of these ends slipping. In this instance the extended ends 6 are wound around the coils A at the points adjacent to the springs B and at the points on the coils directly opposite to the springs B in such a across the tope of the 001 s,

In Fig. 2 I have shown'modified forms 0 so securing the terminal ends of the helical springs to the terminal. coils on the spiral element as indicated. The manner of winding extended ends around the coils is illustrated at 'b.

springs as to wholly avoid the danger of the terminal, endsmoving or turning on the terminal coils and thus avoid producing a friction between the two that would weaken the connecting elements and produce unpleasant squeakingnoises; thus, at b the terminal end of the spring B is wound several times around thete'rminal coil A in such a manner as to render them non-turnable thereon, and at b the terminal end, after having beenwound around the terminal coil, A is passed diagonally across said coil and secured to the opposite side thereof. By this construction, andalso by the construction shownin Fig. l the danger of the coil turning loosely in the eyelet formed in the wire 6 is wholly avertedand all flexibility must be in the helical connecting springs B between the edges of the terminal coils of the spiral springs I Another, and a very important object at tained by this construction as 'shown'in'both Figs. 1 and 2 is that a means is provided whereby the springs B are secured'directly to the surface coils A. or A of the bed springs thus averting the necessity, inconvenience and expenseof introducing a separate.ele-

' ment to secure the flexible connecting springs B to the surface coils of the bed springs A1 or A independent of the surface coils, and at the same time I- avoid the danger of draw ing the securing element of]? of the coils or off of the additional element that is introduced to secure the springs, also the dangerof stretching and rendering the securing element inoperative. What I claim as new, and desire to seeure by Letters Patent of the United States, 1s:

1. In spring bed'bottom construction, surface coils having a series of lateral inden- .t'ures,helical springs placed between the adj acent edges of the surface coils and securely connected directly with said coils and the integral ends'of said springs passed across'the surfaces of the coils andsecurely attached to the opposite edges thereof at points of indenture, substantially as shown.

2. In spring bed bottom construction, spiral springs having large terminal coils made. serpentine in form by reason of oppositely disposed indentations, helical springs connect;

ing said surface coils by means of tangentialends of said springs wound around th'e wire.

in the surface coils at given points and en- Signed at Grand Rapids Michigan Nogaging two or more of the indentations in 'Vember 29, 1911,

the surface coils in such a manner that the Wire forming the surface coils cannot rev FRANQIS KARE 5 volve in the windings of the tangential ends In presence ofof the helical springs and cause grating and I. J. CILLEY,

squeaking noises. A. -AL c1ER. 

